Answer: terrains

AnswerCrossword Clue
TERRAINSRelief maps show them
TERRAINSGrounds
TERRAINSGeographic regions
TERRAINSThey're rocky in mountains
TERRAINSGeographic areas
TERRAINSTracts of land
TERRAINSMilitary topographies.
TERRAINSRegions.
TERRAINSRegions
TERRAINSEnvironments
TERRAINSAreas
TERRAINSTracts
TERRAINSGround types
TERRAINSComputer game designer's creations
terrainsTERRAIN, a tract of land
terrainsarea of land of a specified nature